40140

Dichlorodimethylsilane

≥98.5% (GC)

• Synonym(s): DMDCS, Dimethyldichlorosilane
• Linear Formula: (CH₃)₂SiCl₂
• CAS Number: 75-78-5
• Molecular Weight: 129.06
• Beilstein: 605287
• EC Number: 200-901-0
• MDL number: MFCD00000491
• UNSPSC Code: 12352103
• PubChem Substance ID: 57649927
• NACRES: NA.22

Properties

• Quality Level: 200
• Assay: ≥98.5% (GC)
• form: liquid
• refractive index: n20/D 1.404 (lit.)
• bp: 70 °C (lit.)
• mp: −76 °C (lit.)
• density: 1.07 g/mL at 25 °C (lit.)
• SMILES string: C[Si](C)(Cl)Cl
• InChI: 1S/C2H6Cl2Si/c1-5(2,3)4/h1-2H3
• InChI key: LIKFHECYJZWXFJ-UHFFFAOYSA-N

Description

Application

Dichlorodimethylsilane (DDMS) can be used as a silylating agent for the silylation of Pd/SiO₂ catalysts to enhance the catalytic activity for the selective hydrogenation of aromatic ketones.
It is also employed as a reagent in the synthesis of hydrophilic and hydrophobic silica nanoparticles and amides from unprotected amino acids.

Other Notes

Silylating agent for diols, diamines, etc.; the protection is very sensitive to hydrolysis

Safety Information

• Pictograms: GHS02,GHS06,GHS05
• Signal Word: Danger
• Hazard Statements: H225,H302,H314,H331,H335
• Precautionary Statements: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1A - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): 33.8 °F - closed cup
• Flash Point(C): 1 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves